<div class="head">
 	<div class="logo">
    <h1>i-电影</h1></div>
    <div class="search">
      <form action="" method="get"><input name="" type="text" /><input name="search" type="button" value="search"/>
    </form></div> 
 	<div class="nvabar"><div style="margin-right: 4px;float:left"">{% if user_pr.screenName %}{{user_pr.screenName}} <a href="/logout">退出</a> | {% else %}<a href="/log"><img src="/static/image/wblogin16.png"></a> {% endif %}</div>帮助</div>
 </div>